Minion rush offered to close background apps. Is it normal?

[Windows Central Question]

Hey,
So I downloaded Minion Rush from WP store and installed it. I opened the game for the first time and from top came small window (in my phone's language, which is not English) which said that some apps can go in background. And there was two buttons to open energy options (energy saving app) . And another to go to game or something like this. So I pushed first and went to energy program, which shows all data about apps.

So the question is does it is normal? I bought Windows phone, because it's safe. But I saw such thing for the first time. So guys let me know, if it's not virus or malware??

 

[Marcos Buccella]

Yeah, that notice comes out when you have too many apps running in the background.